A creamy, cheesy, and comforting low-carb dish, this Keto Chicken Cauliflower Casserole brings together tender chicken, cauliflower, and savory flavors in one satisfying meal. Perfect for busy weeknights, it’s a simple yet wholesome dinner option for anyone following a keto lifestyle.

Why You’ll Love This Recipe

This casserole is not only low in carbs but also rich in flavor and texture. It’s packed with protein, loaded with cheese and bacon, and held together by a creamy, tangy sauce. It’s easy to make ahead, great for meal prep, and sure to please the entire family—even those not on keto. The combination of ingredients makes for a hearty meal that’s both filling and satisfying.

ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

cooked chicken (shredded or cubed)
frozen cauliflower (microwaved or steamed until warm and well-drained)
shredded cheddar cheese, divided
cooked bacon crumbles, divided
chopped green onions, divided

For the sauce:

cream cheese, softened
sour cream
mayonnaise
heavy cream
salt
garlic powder
onion powder

directions

Preheat your oven to 400°F (200°C). Lightly grease a 9×13-inch baking dish.
In a large mixing bowl, blend together all the sauce ingredients until smooth and creamy.
Add the cooked chicken and cauliflower to the bowl. Mix in half of the cheddar cheese, bacon, and green onions.
Pour the mixture into the prepared baking dish and spread evenly.
Top with the remaining cheese, bacon, and green onions.
Bake for 30 minutes, or until hot and bubbly.
Let sit for a few minutes before serving.

Servings and timing

Servings: 8
Prep Time: 10 minutes
Cook Time: 30 minutes
Total Time: 40 minutes

Variations

Add buffalo sauce to the mixture for a tangy, spicy buffalo chicken version.
Use a blend of cheeses like mozzarella or pepper jack for extra flavor.
Stir in chopped spinach or kale for an added veggie boost.
Add a pinch of cayenne pepper or chili flakes for more heat.
Use turkey or leftover rotisserie chicken instead of plain cooked chicken.

storage/reheating

Store the casserole in an airtight container in the refrigerator for up to 3–4 days.
To reheat, place individual servings in the microwave and heat until warmed through.
For best texture, you can also reheat in a preheated oven at 350°F (175°C) until heated thoroughly.

FAQs

What kind of chicken should I use?

Cooked, shredded or cubed chicken breast or thighs both work well. Leftover rotisserie chicken is also ideal.

Can I use fresh cauliflower instead of frozen?

Yes, just steam or roast it until tender before adding it to the casserole.

Is this casserole freezer-friendly?

Yes, you can freeze it before or after baking. Wrap it tightly and freeze for up to 2 months.

Can I make this casserole ahead of time?

Absolutely. Prepare everything, cover it, and refrigerate until ready to bake.

How many carbs are in each serving?

Each serving contains approximately 3.8g of net carbs.

Can I add vegetables to this casserole?

Yes, chopped spinach, mushrooms, or zucchini are great low-carb additions.

What can I substitute for mayonnaise?

You can use Greek yogurt, though it may slightly alter the taste and carb content.

How do I make it spicier?

Add hot sauce, red pepper flakes, or chopped jalapeños to the sauce.

Can I use other types of cheese?

Yes, mozzarella, Monterey Jack, or even a spicy cheese blend work well.

How long will leftovers last in the fridge?

Stored properly in an airtight container, leftovers will keep for up to 4 days.

Conclusion

Keto Chicken Cauliflower Casserole is the ultimate comfort food for anyone following a low-carb or ketogenic diet. With its rich, creamy base, cheesy topping, and satisfying flavors, it’s a perfect weeknight dinner or make-ahead meal. Versatile and family-friendly, this dish is sure to become a staple in your keto meal rotation.